:root {
  --bg: #f3f0e8;
  --ink: #1b2231;
  --muted: #5d6473;
  --card: #fffdf8;
  --line: #d8d2c4;
  --primary: #0e5ea8;
  --primary-strong: #0a4a84;
  --accent: #cb4f2f;
  --ok: #1f7b4d;
  --shadow: 0 18px 40px rgba(14, 43, 78, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: radial-gradient(circle at 15% 15%, #fff7df 0, transparent 40%),
    radial-gradient(circle at 85% 0%, #dfecff 0, transparent 35%), var(--bg);
  font-family: "Public Sans", "Segoe UI", sans-serif;
  line-height: 1.45;
}

.background-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, rgba(203, 79, 47, 0.06), transparent 35%, rgba(14, 94, 168, 0.07));
  z-index: -1;
}

.site-header,
main {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  padding: 56px 0 30px;
  display: grid;
  gap: 20px;
  grid-template-columns: 1.5fr 1fr;
  align-items: end;
}

.eyebrow {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 {
  margin-top: 8px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
}

.subhead {
  margin: 14px 0 0;
  color: var(--muted);
  max-width: 62ch;
}

.meta-card {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow);
  transform: translateY(8px);
}

.meta-label {
  margin: 0;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.meta-value {
  margin: 8px 0 0;
  font-size: 1.05rem;
  font-weight: 700;
}

.meta-help {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.tab-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.ad-shell {
  margin: 0 0 20px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
}

.ad-label {
  margin: 0 0 8px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.ad-slot {
  min-height: 96px;
}

.ad-slot .adsbygoogle {
  display: block;
}

.tab-btn {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  font-weight: 600;
  padding: 10px 18px;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease;
}

.tab-btn:hover {
  transform: translateY(-1px);
}

.tab-btn.is-active {
  background: linear-gradient(120deg, var(--primary), var(--primary-strong));
  border-color: transparent;
  color: #fff;
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
  animation: rise 0.35s ease;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1.12fr 1fr;
}

.guide-card {
  margin-top: 16px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
}

.guide-card h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
}

.guide-card p {
  margin: 0 0 12px;
  color: #344056;
}

.guide-card ul {
  margin: 0 0 12px;
  padding-left: 20px;
  color: #344056;
}

.faq-card {
  margin-top: 16px;
  padding: 22px 24px;
  border: 1px solid #d9d3c5;
  border-radius: 16px;
  background: #fffdf9;
}

.faq-card h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
}

.faq-card dl {
  margin: 0;
}

.faq-card dt {
  margin: 0;
  font-weight: 700;
  color: #23314a;
}

.faq-card dd {
  margin: 6px 0 14px;
  color: #344056;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

.form-card,
.result-card {
  padding: 24px;
}

.card-note {
  margin: 8px 0 16px;
  color: var(--muted);
  font-size: 0.93rem;
}

label {
  display: block;
  margin: 14px 0 6px;
  font-size: 0.9rem;
  color: #2e3442;
  font-weight: 600;
}

input,
select {
  width: 100%;
  border: 1px solid #c9c4b9;
  border-radius: 12px;
  padding: 11px 12px;
  font: inherit;
  background: #fff;
}

input:focus,
select:focus {
  outline: 2px solid rgba(14, 94, 168, 0.2);
  border-color: var(--primary);
}

.primary-btn {
  margin-top: 18px;
  border: 0;
  border-radius: 12px;
  padding: 12px 15px;
  font: inherit;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(120deg, var(--accent), #b83f23);
  cursor: pointer;
}

.primary-btn:hover {
  filter: brightness(1.05);
}

.primary-btn:disabled {
  opacity: 0.68;
  cursor: not-allowed;
  filter: none;
}

.placeholder {
  margin-top: 14px;
  color: var(--muted);
}

.loading-wrap {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.loading-spinner {
  width: 20px;
  height: 20px;
  border-radius: 999px;
  border: 2px solid #d8d2c4;
  border-top-color: var(--primary);
  animation: spin 0.7s linear infinite;
}

.loading-text {
  margin: 0;
  color: #3b475d;
  font-weight: 600;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.kpi-grid {
  margin-top: 14px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.kpi {
  border: 1px solid #dbd4c5;
  border-radius: 12px;
  padding: 10px;
  background: #fff;
}

.kpi-label {
  margin: 0;
  font-size: 0.78rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kpi-value {
  margin: 5px 0 0;
  font-weight: 700;
  font-size: 1.04rem;
}

.kpi-value.good {
  color: var(--ok);
}

.result-note {
  margin: 14px 0 0;
  padding: 10px 12px;
  border-radius: 10px;
  background: #f6f8fc;
  color: #3a475b;
  font-size: 0.88rem;
}

.result-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: #3a475b;
}

.chain-grid {
  margin-top: 12px;
  border: 1px solid #ddd6c8;
  border-radius: 12px;
  padding: 10px;
  background: #fff;
}

.chain-heading {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.chain-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}

.chain-row.head {
  margin-top: 0;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.chain-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
}

.chain-table th,
.chain-table td {
  border-bottom: 1px solid #e2ddcf;
  text-align: left;
  padding: 7px 5px;
  font-size: 0.9rem;
}

.chain-table th {
  color: var(--muted);
  font-weight: 700;
}

.footnote-card {
  margin: 22px 0 32px;
  padding: 20px 22px;
  border: 1px solid #d8d2c4;
  background: rgba(255, 255, 255, 0.72);
  border-radius: 16px;
}

.footnote-card ul {
  margin: 10px 0 0;
  padding-left: 18px;
  color: #3d4656;
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr;
    align-items: start;
    padding-top: 36px;
  }

  .meta-card {
    transform: none;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .form-card,
  .result-card,
  .footnote-card {
    padding: 18px;
  }

  .chain-row,
  .chain-row.head {
    grid-template-columns: 1fr;
  }

  .kpi-grid {
    grid-template-columns: 1fr;
  }
}